osx man page for mpi_attr_delete

MPI_Attr_delete(3OpenMPI)												 MPI_Attr_delete(3OpenMPI)

NAME
       MPI_Attr_delete - Deletes attribute value associated with a key -- use of this routine is deprecated.

SYNTAX
C Syntax
       #include <mpi.h>
       int MPI_Attr_delete(MPI_Comm comm, int keyval)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_ATTR_DELETE(COMM, KEYVAL, IERROR)
	    INTEGER   COMM, KEYVAL, IERROR

INPUT PARAMETERS
       comm	 Communicator to which attribute is attached (handle).

       keyval	 The key value of the deleted attribute (integer).

OUTPUT PARAMETER
       IERROR	 Fortran only: Error status (integer).

DESCRIPTION
       This deprecated routine is not available in C++.

       Note that use of this routine is deprecated as of MPI-2. Please use MPI_Comm_delete_attr.

       Delete  attribute  from	cache by key. This function invokes the attribute delete function delete_fn specified when the keyval was created.
       The call will fail if the delete_fn function returns an error code other than MPI_SUCCESS.

       Whenever a communicator is replicated using the function MPI_Comm_dup, all callback copy functions for attributes that  are  currently  set
       are  invoked  (in  arbitrary order). Whenever a communicator is deleted using the function MPI_Comm_free, all callback delete functions for
       attributes that are currently set are invoked.

ERRORS
       Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func-
       tions  do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
       will be used to throw an MPI:Exception object.

       Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except  for
       I/O  function  errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be
       used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

Open MPI 1.2							  September 2006					 MPI_Attr_delete(3OpenMPI)